Flat Washer

Also known as: Plain Washer, Standard Washer

Standard round washers that distribute load and protect surfaces from bolt or nut damage. Most common washer type for general fastening.

Quick Specifications

Washer Type

Flat

Category

Washer

Measurement

Imperial, Metric

Dimensions

Inner Diameter (ID)
0.125" - 3"
Outer Diameter (OD)
0.312" - 6"
Thickness
0.016" - 0.375"

Available Materials

Steel Stainless Steel Zinc Plated Galvanized Brass Nylon

Standards

ASME B18.21.1 SAE USS DIN 125 ISO 7089

Common Applications

  • + General fastening
  • + Load distribution
  • + Surface protection
  • + Spanning oversized holes

Not Recommended For

  • - Vibration-prone assemblies
  • - High-torque applications

Related Fasteners

Fender Washer Lock Washer